Electrical Engineering Questions, Problems & Solutions : TransWikia.com ~ Page 14

How to learn PID Control?

I want to learn PID (Proportional–Integral–Derivative) control mainly for temperature. I would like to learn preferably through an easy project to do. Could you please recommend something which would take...

Asked on 12/12/2021

6 answer

Using car charger for small sealed-type lead-acid batteries

I want to charge a couple of small (1Ah 12V) sealed-type lead-acid batteries. I have a Bosh KL 1204 car battery charger. The charger's nominal current is fixed at 2.3A,...

Asked on 12/12/2021

6 answer

Why does only the fermi level shift in a semiconductor under an external electric field?

I find a difficult time understanding why does only the fermi level shifts in a pn junction under an external electric field? Why are the conduction and valence bands...

Asked on 12/12/2021

1 answer

Variation of Fermi level in doped semiconductor with applied voltage

Is Fermi level of p or n type semiconductor constant with respect to applied voltage ? Please explain. From the attached image it seems Fermi level of intrinsic semiconductor varies...

Asked on 12/12/2021 by TVV

2 answer

Solving circuit design problem with two approaches

A voltage of 200V is applied to a tapped resistor of 500 ohm. Find the resistance between two tapping points connected to a circuit needing 0.1A at 25V.I have...

Asked on 12/12/2021

1 answer

L-C-L vs Pi network

I am playing with a simple high-pass phase shifter implemented as a Pi network in Sonnet Lite with a center of 146MHz and discovered something by accident that I would...

Asked on 12/12/2021

1 answer

What is the "DanTherm" model in the SOATherm library in LTSpice?

LTSpice's SOATherm symbol has a "user-defined" option in the models list but I can't find any documentation on how to use it. Out of curiosity I opened the .lib...

Asked on 12/12/2021 by Spice_Rack

0 answer

Is there any limitation in how quickly/often I can change a 6V DC motor direction of rotation?

I have a 6V DC motor, which needs to change rotation direction every 5 seconds or so. The motor is powered and controlled by an Arduino. Arduino is providing approx....

Asked on 12/12/2021

1 answer

How to light LEDs with Arduino without having any resistors

I've got a silly situation. I have an Arduino board (2009). There's just one inbuilt LED but can't do much with it beyond blinking. I have five LEDs (3 yellow,...

Asked on 12/12/2021

6 answer

How do I connect this crane machine motherboard to my power supply? What connectors do I need for the power supply header pins?

I bought a DIY crane machine online and I'm trying to work out how to set up the power supply. The power supply they provided in the photos looks setup...

Asked on 12/12/2021 by Sam Jacka

1 answer

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